78. sin² 20 1 + cos 20 = 2 sin²0
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 40E
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can you explain how to verify this identity
![78.
sin² 20
1 + cos 20
2 sin²0](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb6a0ed01-dc7e-4fee-9bdd-27c695376c3b%2F9984db7c-9a1d-4734-99aa-de980e14eb7a%2Fu34hl8u_processed.png&w=3840&q=75)
Transcribed Image Text:78.
sin² 20
1 + cos 20
2 sin²0
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